BLF Data Signals not mapped to data.

Hello,

I've been trying to review some BLF data at my company using the Vehicle Network Toolbox. I was able to load in my .dbc file (Database File) and upload my BLF data file into matlab. The issue I am running into to is my database file has a "Name" of DTO (Data Tranmission Object). In this data base has a list of CAN signals(Can not show due to NDA). But looking at the BLF data the Name of the data its self is all marked as DTO... I am new to this BLF files so I am not sure if my Database File is not set up correctly or if I am missing something within my code to get these files to map correctly. I've attached a few screen shots.

If you need any additional information please feel free to ask I will do my best to answer.

Answer 1

[Shlok]

Hi Avery,

The repeated "DTO" entries you’re seeing aren’t an issue. It usually means multiple messages share the same CAN ID and are mapped to the same definition in the DBC file. You can use the "canSignalTimetable" function to repackage signal data from each unique message into a signal-level timetable.

Hence, to view the signals for "DTO", run:

canSignalTimetable(blfData, "DTO")

You can also refer to this example in the documentation for more details on the "canSignalTimetable" function:

https://www.mathworks.com/help/releases/R2023b/vnt/ug/decoding-can-data-from-blf-files.html#:~:text=Use%20the%20canSignalTimetable%20function%20to%20repackage%20signal%20data%20from%20each%20unique%20message%20on%20the%20bus%20into%20a%20signal%20timetable